the pressure of a `1 : 4` mixture of dihydrogen and dioxygen enclosed in a vessel is one atmosphere. What would be the partial pressure of dioxygen ?

Options

A. `0.8 xx 10^(5)` atm
B. `0.008 N m^(-2)`
C. `8 xx 10^(4) N m^-2`
D. `0.25` atm

Answer

C

Explanation

Partial pressure of `O_(2)` = mole of fraction of `O_(2) xx` Pressure of mixture = `(4)/(5) xx 1 atm = 0.8 atm = 8 xx 10^(4) N m^(-2)`